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1.If you send this letter now, she will receive it tomorrow.
2.If I do this test, I shall* improve my English.
3.If I find your ring, I shall* give it back to you.
4.Peggy will go shopping if she has time in the afternoon.
5.Simon will go to London next week if he gets a cheap flight.
6.If her boyfriend does not phone today, she will leave him.
7.If they do not study harder, they will not pass the exam.
8.If it rains tomorrow, I shall* not have to water the plants.
9.You will not be able to sleep if you watch this scary film.
10.Susan will not be able to move into the new house if it is not ready on time.